Sheet-metal-cutting machine



H. H. SPANG.

SHEET METAL CUTTING MACHINE.

APPLICATION FILED JULY 5. I918 Patented Aug. 26, 1919.

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H. H. SPANG.

SHEET METAL CUTTlNG MACHINE.

APPLICATION HlED JULY 5. 191sv 1,314,286. 4 PatentedAug. 26,1919.

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um nlmlllllyl v EIJFIWIMFIZ llll UNITED STATES PATENT OFFICE.

SHEET-METAIJCUTTING MACHINE.

Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed July 5, 1918. Serial No. 243,412.

To all whom it may concern:

Be it known that I, HAROLD I-I. SPANG, a citizen of the United States, residing at Leechb'urg, in the county of Armstrong and State ofPennsylvania have invented certain new and useful Improvements in Sheet- Metal-Cutting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its objcctto provide an improved and simplified cutting machine, whereby large sheets of sheet metal or other material may be, expeditiously cut into strips of any desired length and Width.

l/Vith this and other objects in View, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in theaccompanying drawings and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departingfrom thespirit or sacrificingany of the advantages of the invention.

Inthe drawingsr.

Figure 1 represents a side elevation of the cutting machine, partly in section.

Fig. 2 represents a top plan view thereof.

Fig. 3 represents a detail sectional view on the line 3-3 of Fig. 1.

Fig. 4 is a Similar View on the line 4e-4 of Fig. 1. i

Fig. 5 is a detail side elevation of the feeder and cutter roll driving gears, and

Fig. 6 represents a detail transverse sectional View through one of the cutting rolls. Referring to the drawings in detail,

wherein similar reference numerals desig nate corresponding parts throughout the several views, the humeral 10. deslgnates generally the supporting frame structure for the machine which includes the end supporting legs 11 and intermediate legs 12. The legs at one end ofthe frame structure are connected with the intermediate legs 12 by the parallel side members13, provided with slots 13" receiving the reduced ends 1 1 of the slats 01' boards 15 forming a table having a series of transversely extending slots to accommodate the cutting knives which will be hereinafter more fully described. The'sl ats are held in position in the frame *movement or play in the blades 26.

structure by nuts 16 and are designed to support the sheet of metal or other material as the latter is cut to the desired length. It will be apparent that the slats or boardsare adjustable in the slot 13.

A drive shaft 17 is journaled in bearings provided in the legs 11 and 12 and is connected with a crankshaft 19 by a train of gears 20. The crank shaft l9.is also journaled in the legs 11 and 12 and is provided with two or any other desired number of crank pins or arms 21 having connection with rods 22 attached to a reciprocable shaft 23. The shaft is designed for reciprocation in an inclined plane in guide slots 24 provided in the supporting legs 11 and 12 and is connected by the rods 25 with the outer terminals ofrelatively movable cutting knives 26, as indicated at 27. The rods 25 are mounted for adjustment longitudinally of the shaft 23, and the blades are pivotally supported at their outer ends for adjustment toward'and away from each other by a shaft 28 extending between'the legs 11 and 12 and arranged directly above one of the side members 13. Connecting the blades- 26 is a rod 26 adapted to prevent a lateral As will be readily understood, the rod 26, which may be detachably secured to the blades 26 j in any suitable or preferred manner, is removed during adjustment of the blades toward or away from each other, this rod being replaced after the desired adjustment has been effected and secured in position in any Well known manner.

The relatively movable blades 26 are arranged for movement through the slots between the slats 15 andcooper'ate with relatively stationary blades 28 supported atone end on a shaft 29 extending between the supporting legs and connectedat their opposite terminals with inclined braces 30 connected with a supporting rod 31 extending between the legs. While blades 28 are stationary relative to blades 26, it will be understood, of course, that they are ad ustable toward and away from-each other upon the rod 31 and shaft 29 so as to accommodate adjustment of the upper blades. The blades 26 and 28* are, of course, secured in proper adjustment upon their supporting shafts or rods by means of set screws, as

illustrated in Fig. 3 of the drawings, or by any other suitable equivalent means.

During the rotary movement of the crank ;,;..the upper bearing members 3lsupporting a; duplicate series of superposed feed roller shaft 19, the rod 23 is reciprocated in the guide slots 24 and the movable blades rear-e oscillated upon the shaft 28 and coactwith the relatively stationary blades 28 to cut the sheet of metal or other material to the desired length.

The legs 11 .at the opposite end of the'sup= porting frame structure ll) are connected with the intermediate legs 12 by superimposed bearing beams 33, and 34, the lower beam 33 rotatably supporting a:series of spaced parallel feed or cutter rollers 35 and 35. l the center ,of' the series of cutter rolls 35, afpair of superposed cuttingroll- .ers 36 are arrangedand therolls 36'are pro- Nided with ciroularl euttingknives 37 arranged in pairs and. designed to .cut the heet of. metal into strips, as {it is fed be- (tween the cutter or feed rollers35.

The spindles of the several feed rollers .35 support intermeshing gearwheels 38; and

the rotary movement of one gear wheel, of

one pa r is transmitted to the gear wheel of the adjacent pair by an intermediate or idler gear Wheel 39 which is supported ina hearing 40. attached .toythe roll spindles and meshes jwith relatively small pinions 41 carried bytherespective roll spindles.

Each ofthe, cutting rolls 36 is provided with a flat surface 42 and the central aperture in the adjustable cuttingblades 37 is shapecticorrespondingly so as to prevent rotary movement of 'the, bladesjupon: the rollers. The blades arerheldgin adjusted PTO- sitionby set screws AS-w'hich are fitted-in internally screw; threaded apertures in laterallyprojecting ears 44: carried 'by the,

' roller is driven (during the operation, of;

The upper cutting roller is connected by a similar chain of gearswith theseriesofcutter and feed rollers 35 on the machine.

' the opposite-side of'the cutting rolls.

Th e feedfrollers at the opposite ends of l the series are ,connected' by a train ofgearsv 4:7,,wher'eby thelrolls are, driven during the operation of the machine.

What I claim is: 1. 1A cutting machine comprising a frame structure. including spaced side members,

spaced I slats; supported (j by v the side mem-' bers, a relativelyistationary knife arranged 1 between the slats a shaft journaled in the ;;frame,. structure, aycrank pin carried'by; said shaft, a grecipro cable shaft, -:means con.-

neeting the crank pinof the first mentione d shaft WltlltllB reciprocable shaft, a pivoted "blade adapted to cooperate with the rela-' tively stationary blade, and means connecting the reciprocable shaft with said pivoted blade.

' 2'. In a machine of the character described, *a supporting frame, feedmg and" cutting z nechanisms carried by said frame for feeding a sheet of material'to be operated upon longitudinally. thereofand cuttingxth-is' materialinto parallel strips during its passage through'said mechanisms,

a receiving table positioned to receivestrips I of material fed over the same from the cutting and feedingmechanisms, said table being provided with'apluralityof spaced parallel slots extending at right angles .to

material, spaced pairs of cutting -shears p0 :sitioned adjacent the table and operable through said slots for cutting-the strips .of material" into predetermined" lengths,j said pairs of shears being mounted for adjustment toward and away from each other I soas to cut the strips of material into different lengths, and-means shears 1 3. Ina machine the character described', a supporting frame, feedingandcutting mechanisms carried by said-frame forfeeding asheet of; materialto be operated upon longitudinally thereof {and for for operating said the direction of movement of thestrips of cutting this-material into parallel strips during its, passage through said mechanisms, a receiving table supported; bythe frame adjacent the innerends of saidfeed- -ing and cutting mechanisms for receiving 'the strips of material cut, said receiving table. being "provided with -a plurality 10f spaced parallel slotsjdisposed at right'angles to the direction of movement of said strips fed across the table .from'the I feeding and cutting mechanisms, spaced' pairsof shears; supported 'by' the. frame and operable 110 through the slots of saidtable' for cutting the. strips of material intofipredetermined lengths, said pairs of shears e-being, adjustable toward and away from each other-so I as to vary the lengthof the strips cut, and ;.means for operating saidshears simultaneously scribed, a supporting-.frame, .feedinggand cuttingmechanisms adapted to feed asheet of material: to be operated upon ilongitudi .115 with the operation of. the cutting and 1 I feeding mechanisms. V 1 a I l 4. Inxamachine of, thecharacterz, de-

nally ofjsaid frame and to. out. said sheet, into a plurality [of parallel; strips longitudinally thereof, a receiving'table positioned adjacent said feeding andiclutting inecha g nisms so as to have the strips produced.

being provided witha plurality of trans.

verse parallel slots disposed 'at right angles to. the direction oftravel of said strips, a

thereby passed I over, said table, .the table plurality of cutting blades supported by the frame beneath the table and adjustable toward and away from each other so as to be positioned adjacent any of the slots of the table selectively, a plurality of cutting blades pivotally supported by the frame above the table so as to be movable toward and away from said lower blades, the lower blades being held against movement and cooperating with said upper blades to produce shears for cutting the strips of material, said upper blades being mounted for adjustment toward and away from each other, and means for operating said upper blades.

5. In a machine of the character described, a supporting frame, feeding and cutting mechanisms carried by said frame for feeding a sheet of material to be operated upon longitudinally thereof and for cutting this sheet into parallel strips extending longitudinally of the sheet, a receiving table composed of a plurality of spaced slats supported by the frame and positioned to receive the strips of material fed over the same from said feeding and cutting mechanisms, said slats being disposed transversely of the frame, spaced cutting blades rigidly supported in substantial horizontal position beneath the slats of the table, said blades being mounted for adjustment toward and away from each other so as to have the distance between the blades varied and so as to be brought into alinement with any of the spaces between said slats selectively, the slats being adjustable toward and away from each other so as to permit accurate adjustment between the slats and blades, a supporting shaft carried by the frame above said slats and extending longitudinally thereof, blades rockably mounted on said shaft adjacent their outer ends so as to be adjustable longitudinally thereof toward and away from each other, said. .rockable blades cooperating with the blades beneath the slats of the table to provide cutting shears for cutting the strips of material passed across said table into lengths, and means for operating said rockable blades simultaneously with the operation of the said feeding and cutting mechanisms.

In testimony whereof I aflix my signature in presence of two witnesses.

HAROLD H. SPANG. Witnesses P. H. KLINE, A. O. KINTER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

